Arlington Road (1999)

In a quiet suburban neighborhood, a college professor, Michael Faraday, becomes suspicious of his seemingly perfect neighbors, the Langs. As Michael delves deeper into their past, he uncovers dark secrets and potential threats to national security. His investigation leads to a dangerous confrontation, putting not only himself but also his loved ones in jeopardy. As Michael races against time to uncover the truth, he faces a chilling realization about the true nature of those around him.